This volume is a reference book on more than a thousand Jewish writers, rabbis, physicians and laymen active in 18th-century Italy. Each author has a biographical notice, followed by a list of his printed works and manuscripts, their location in the major international judaica collections and a bibliography of the relevant secondary sources. The book is illustrated with more than forty portraits of authors and includes rich analytical and thematic indexes. This work is intended to be a fundamental instrument for scholars interested in the Jewish Italian Enlightenment. It allows us to address, from a sociological and quantitative perspective, questions such as: what did Italian Jews write about?, for whom?, where?, and, in which language?